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Finding the Fourth Proportional to 1,313,644.42, 1,812,849.42 and 769,650.04

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Solution

The fourth proportional to 1,313,644.42, 1,812,849.42 and 769,650.04 is: 1,062,128.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313,644.42 : 1,812,849.42 = 769,650.04 : x
  2. Step 2: Convert to fraction form
    1,313,644.42/1,812,849.42 = 769,650.04/x
  3. Step 3: Cross multiply
    1,313,644.42x = 1,812,849.42 × 769,650.04
  4. Step 4: Simplify right side
    1,313,644.42x = 1,395,259,628,616.98
  5. Step 5: Solve for x
    x = 1,395,259,628,616.98/1,313,644.42
  6. Step 6: Final answer
    x = 1,062,128.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.